°§Pakistani leaders appealed to the masses to remain peaceful after the bomb blast.

A photo journalist runs from the site of a suicide bomb attack after an angry mob started to burn vehicles and beat journalists in Karachi December 28, 2009. (Xinhua/Reuters Photo)Photo Gallery>>>

ISLAMABAD, Dec. 28 (Xinhua) -- Angry mob attacked government buildings, markets, banks and torched vehicles in the south Pakistani city of Karachi after a deadly suicide attack on a religious procession.

At least 20 people were killed and 50 injured in the attack on Shiite Muslims, said Sagheer Ahmed, health minister in Sindh Province.

An angry mob charges towards police after setting ablaze shops and vehicles at the site of a suicide bomb attack on a procession of Shi'ite Muslims commemorating Ashura in Karachi December 28, 2009. (Xinhua/Reuters Photo)Photo Gallery>>>

No group has yet claimed responsibility for the attack but Altaf Hussain, leader of the main group "Mutahida Qaumi Movement" said that it is handiwork of the Taliban militants.

An angry mob charges towards police after setting ablaze shops and vehicles at the site of a suicide bomb attack on a procession of Shi'ite Muslims commemorating Ashura in Karachi December 28, 2009. (Xinhua/Reuters Photo)Photo Gallery>>>

An angry mob charges towards police after setting ablaze shops and vehicles at the site of a suicide bomb attack on a procession of Shi'ite Muslims commemorating Ashura in Karachi December 28, 2009. (Xinhua/Reuters Photo)Photo Gallery>>>